<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style>
			body{
				background-image: url('img/OIP-C.jpg');
				background-size: 100%;
			}
			h1 {
			  text-align: center;
			  margin-top: 200px;
			  font-size: 60px;
			  font-weight: bold;
			  letter-spacing: 5px;
			  color: rebeccapurple;
			  animation: start 2s infinite linear;
			}
			
			@keyframes start {
			  0% {
			    transform: scale(0.7);
			  }
			  50% {
			    transform: scale(1.0);
			  }
			  100% {
			    transform: scale(0.7);
			  }
			}
		</style>
	</head>
	<body>
		<h1>欢迎使用学生宿舍管理系统</h1>
	</body>
</html>